Model Interpretation:
LZ: Usually represents "DC" (Liuzhi) or "Vertical/Pressurized".
S: Represents "Surface" or "Solar".
U: Usually represents "Universal" or "User-friendly".
Core Form: Horizontal/side-entry mounted DC brushless centrifugal pump.
Working Method: It belongs to the surface pump category, installed on the ground. It typically uses a single-stage or double-stage centrifugal impeller structure, and by optimizing the hydraulic model, it provides sufficient pressure (head) while ensuring a certain flow rate.
Core Working Principle: Permanent Magnet Brushless + Centrifugal Pressurization
The working principle of the LZSU series focuses on "stability" and "efficiency":
Power Source: Uses a permanent magnet DC brushless motor (BLDC). This type of motor is highly efficient, compact, and has high torque, making it ideal for direct drive by solar panels.
Centrifugal Work: The motor drives the cast iron or aluminum impeller to rotate at high speed. The water flow is thrown towards the pump casing by centrifugal force and collected at the outlet through the guide channel.
Intelligent Control (MPPT): This series usually comes standard with or is compatible with an MPPT (Maximum Power Point Tracking) controller.
Automatic Adjustment: Automatically adjusts the motor speed according to the sunlight intensity, achieving "working from sunrise to sunset".
Protection Functions: Features include water shortage protection (dry-running protection), overvoltage protection, overcurrent protection, etc., requiring no manual supervision.
Core Features: Strong versatility, moderate pressure, simple maintenance
Feature Detailed Description
Flow and Pressure Balance Core advantage. The LZSU series is neither like vortex pumps (LSQB) with too low flow rates, nor like pure high-flow pumps (LHF) with insufficient pressure. Its head is usually around 20-40 meters, and the flow rate is between 10-40 tons per hour (depending on the specific model), making it ideal for most homes and small farms.
Robust Material The pump body is usually made of cast iron or high-strength die-cast aluminum, and the impeller is mostly brass or stainless steel. Compared with plastic pumps, it is more wear-resistant, corrosion-resistant, and has a longer lifespan.
Strong Self-Priming Capability: Most LZSU series pumps have excellent self-priming capabilities (self-priming height up to 5-8 meters), allowing them to be installed directly on the ground and draw water from low-lying pools or shallow wells.
Easy Installation: Compact structure, with inlet and outlet ports typically using standard threads or flanges, making pipe connection very convenient.
Typical Application Scenarios
The LZSU series is a versatile "all-rounder" for homes and small to medium-sized farms:
Household Water Supply:
Installed in the courtyard or on the roof, using solar energy to pump water from underground wells, pools, or municipal water networks for household use such as washing, showering, and toilet flushing.
Small to Medium-Sized Farm Irrigation:
Suitable for sprinkler or drip irrigation systems for several acres to tens of acres of farmland, orchards, and vegetable gardens. Its flow rate and pressure are sufficient to cover these areas.
Garden/Lawn Sprinkling:
Used in automatic sprinkler systems for villa gardens, providing stable pressure and water source.
Livestock Watering:
Used for automatic water trough replenishment in livestock farms.
Selection and Usage Suggestions
Suction Head Limitation (Crucial):
Although it is a surface pump, its vertical suction height usually does not exceed 8 meters (limited by atmospheric pressure). If the water source is below 8 meters, please use a deep well pump (such as the 3LSS series).
Water Quality Requirements:
Although it is more durable than plastic pumps, to extend its lifespan, it is recommended to install a filter screen at the inlet to prevent large particles from being sucked in and damaging the impeller.
Voltage Matching:
The LZSU series usually has multiple voltage levels (such as 24V, 48V, 72V, etc.). Please ensure that your solar panel configuration (series voltage) matches the pump's rated voltage.
Anti-Freezing Measures:
If used in winter, the remaining water in the pump body must be drained after shutdown to prevent freezing and expansion from cracking the pump casing (especially aluminum pump bodies).
The LZSU series is an "all-rounder" in solar water pumps. If your needs are "to supply water to the entire household" or "to irrigate several acres to tens of acres of land," and the water source depth is within 8 meters, then the LZSU series is a highly cost-effective and reliable choice. It strikes a perfect balance between flow rate and pressure.
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